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  1. Alcove Bluestone

    ... Specimen: 2015-009-1 This specimen is a sandstone . Detrital grains constitute about 50 to 60 percent of slide area with the ... cementing matrix. There is no appreciable void space. Of the detrital grains, quartz comprises about over 95 percent, but a majority of ...

    Intern - 2015-09-05

  2. Aquia Creek

    ... Specimen: 2014-050-1 This specimen is a sandstone . Detrital grains constitute 60 to 70 percent of slide area, void space ranges ... composed of a relatively submature parent material. Of the detrital grains, quartz (poly and mono-crystalline) comprises about 65 ...

    Raven Mueller - 2015-07-22

  3. Locharbriggs

    ... Specimen: 2015-003 This specimen is a sandstone . Detrital grains constitute about 75 percent of slide area, void space is ... by matrix. Most grains are rounded to subrounded. Of the detrital grains, quartz comprises about 95 percent of grains. Feldspar s ...

    Ed FitzGerald - 2015-09-05

  4. St. Bees

    ... Specimen: 2015-004 This specimen is a sandstone . Detrital grains constitute about 75 percent of slide area, void space is ... by matrix. Most grains are subrounded to subangular. Of the detrital grains, quartz comprises about 60 percent of grains. Feldspar s ...

    Ed FitzGerald - 2015-09-05

  5. Lazonby

    ... Specimen: 2015-005 This specimen is a sandstone . Detrital grains constitute about 60 to 70 percent of slide area, void space ... by matrix. Most grains are rounded to subrounded. Of the detrital grains, quartz comprises about 80 to 90 percent of grains. ...

    Ed FitzGerald - 2015-09-05

  6. Stoke Hall

    ... Specimen: 2015-006 This specimen is a sandstone . Detrital grains constitute about 70 percent of slide area, void space is ... shapes but most were likely subrounded to subangular. Of the detrital grains, quartz comprises about 85 percent of grains. Sutured ...

    Ed FitzGerald - 2015-09-05

  7. Stanton Moor

    ... Specimen: 2015-001 This specimen is a sandstone . Detrital grains constitute 65 to 75 percent of slide area, void space is ... grains, but rounded to subrounded is most likely. Of the detrital grains, quartz comprises about 85 percent of grains. Feldspar s ...

    Ed FitzGerald - 2015-09-05

  8. Darney

    ... Specimen: 2015-002 This specimen is a sandstone . Detrital grains constitute 70 to 80 percent of slide area, void space is ... but rounded to sub-rounded most likely predominated. Of the detrital grains, quartz comprises about 95 percent of grains. The remaining ...

    Ed FitzGerald - 2015-09-05

  9. Harvest Gold

    ... particles constitute nearly 100 percent of slide area. The detrital grains are composed of about 75 percent quartz ; approximately 90 ... minimum is .1 mm. This minimum is in reference to original detrital grain size, not the smallest crystal in polycrystalline grains, which ...

    Raven Mueller - 2015-07-22

  10. Sioux Quartzite

    ... of an interlocking mosaic of quartz grains. The original detrital grains appear to have been rounded and well sorted prior to ...

    Raven Mueller - 2015-07-22

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